306
FNCA52 TJSJ 050730
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 AM AST SAT SEP 5 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-052000-
SOUTHEAST COASTAL PLAINS-
330 AM AST SAT SEP 5 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 10 30
TEMP (24H TREND) 92 (+2) 76 (-2) 91
RH % (24H TREND) 58 (+1) 93 (+6) 58
WIND 20FT/EARLY(MPH) E 11 E 11 E 11
WIND 20FT/LATE(MPH) SE 12 E 8 SE 11
MIXING HGT(FT-AGL/MSL)4690 4680
TRANSPORT WND (MPH) E 14 SE 14
VENT RATE (KT-FT) 56280 56160
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-052000-
SOUTHERN HILLS-
330 AM AST SAT SEP 5 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 0 40
TEMP (24H TREND) 90 (+4) 72 (-3) 89
RH % (24H TREND) 62 (-2) 99 (+6) 62
WIND 20FT/EARLY(MPH) E 10 E 10 E 11
WIND 20FT/LATE(MPH) SE 11 E 10 SE 11
MIXING HGT(FT-AGL/MSL)5240 5520
TRANSPORT WND (MPH) E 14 SE 13
VENT RATE (KT-FT) 62880 60720
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-052000-
NORTH COASTAL PLAINS-
330 AM AST SAT SEP 5 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 40 10 60
TEMP (24H TREND) 92 (+2) 74 (-3) 93
RH % (24H TREND) 62 (-3) 99 (+5) 61
WIND 20FT/EARLY(MPH) E 11 SE 13 E 11
WIND 20FT/LATE(MPH) E 16 SE 9 E 14
MIXING HGT(FT-AGL/MSL)4820 5140
TRANSPORT WND (MPH) E 14 SE 10
VENT RATE (KT-FT) 57840 46260
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-052000-
NORTHERN HILLS-
330 AM AST SAT SEP 5 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS NONE TSTMS
CHANCE PRECIP (%) 60 0 80
TEMP (24H TREND) 90 (+1) 73 (-2) 91
RH % (24H TREND) 65 (+2) 100 (+4) 64
WIND 20FT/EARLY(MPH) E 9 SE 10 E 9
WIND 20FT/LATE(MPH) E 13 SE 5 E 12
MIXING HGT(FT-AGL/MSL)5440 5750
TRANSPORT WND (MPH) E 12 SE 8
VENT RATE (KT-FT) 54400 40250
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-052000-
WEST COAST-
330 AM AST SAT SEP 5 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS NONE TSTMS
CHANCE PRECIP (%) 30 0 40
TEMP (24H TREND) 92 (0) 75 (0) 93
RH % (24H TREND) 64 (+4) 99 (+2) 61
WIND 20FT/EARLY(MPH) E 10 SE 12 E 12
WIND 20FT/LATE(MPH) SE 11 E 12 E 14
MIXING HGT(FT-AGL/MSL)4300 4820
TRANSPORT WND (MPH) SE 10 SE 14
VENT RATE (KT-FT) 38700 57840
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-052000-
EASTERN INTERIOR-
330 AM AST SAT SEP 5 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 40 30 50
TEMP (24H TREND) 91 (+3) 74 (-3) 91
RH % (24H TREND) 61 (-3) 99 (+4) 60
WIND 20FT/EARLY(MPH) E 10 SE 11 SE 11
WIND 20FT/LATE(MPH) SE 12 SE 11 SE 12
MIXING HGT(FT-AGL/MSL)6020 6360
TRANSPORT WND (MPH) E 14 SE 12
VENT RATE (KT-FT) 72240 63600
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-052000-
LUQUILLO MOUNTAIN RANGE-
330 AM AST SAT SEP 5 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 50 40 60
TEMP (24H TREND) 86 (+4) 71 (-3) 86
RH % (24H TREND) 67 (-5) 100 (+1) 67
WIND 20FT/EARLY(MPH) E 9 SE 9 SE 9
WIND 20FT/LATE(MPH) SE 11 SE 9 SE 11
MIXING HGT(FT-AGL/MSL)4400 4430
TRANSPORT WND (MPH) E 15 SE 12
VENT RATE (KT-FT) 57200 44300
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-052000-
CENTRAL MOUNTAIN RANGE-
330 AM AST SAT SEP 5 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY CLEAR PCLDY
PRECIP TYPE TSTMS NONE TSTMS
CHANCE PRECIP (%) 60 0 60
TEMP (24H TREND) 88 (+4) 70 (-2) 88
RH % (24H TREND) 67 (+1) 100 (+3) 67
WIND 20FT/EARLY(MPH) E 8 SE 8 SE 9
WIND 20FT/LATE(MPH) SE 8 SE 6 SE 9
MIXING HGT(FT-AGL/MSL)5910 6700
TRANSPORT WND (MPH) E 10 SE 9
VENT RATE (KT-FT) 53190 53600
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-052000-
CAYEY MOUNTAIN RANGE-
330 AM AST SAT SEP 5 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 40
TEMP (24H TREND) 86 (+2) 72 (-2) 86
RH % (24H TREND) 68 (-1) 100 (+1) 68
WIND 20FT/EARLY(MPH) E 9 E 8 SE 9
WIND 20FT/LATE(MPH) SE 10 E 8 SE 10
MIXING HGT(FT-AGL/MSL)5020 5250
TRANSPORT WND (MPH) E 15 SE 12
VENT RATE (KT-FT) 65260 52500
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-052000-
VIEQUES-
330 AM AST SAT SEP 5 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY PCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 50 50 60
TEMP (24H TREND) 90 (-1) 79 (-2) 90
RH % (24H TREND) 59 (-2) 87 (+2) 59
WIND 20FT/EARLY(MPH) E 11 E 12 SE 12
WIND 20FT/LATE(MPH) E 12 E 13 SE 11
MIXING HGT(FT-AGL/MSL)2710 2680
TRANSPORT WND (MPH) E 15 SE 14
VENT RATE (KT-FT) 35230 32160
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-052000-
CULEBRA-
330 AM AST SAT SEP 5 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 50 40 50
TEMP (24H TREND) 91 (+1) 79 (-3) 91
RH % (24H TREND) 61 (-5) 90 (+1) 60
WIND 20FT/EARLY(MPH) E 11 E 12 SE 13
WIND 20FT/LATE(MPH) E 12 E 13 SE 12
MIXING HGT(FT-AGL/MSL)2720 2830
TRANSPORT WND (MPH) E 16 SE 16
VENT RATE (KT-FT) 38080 39620
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-052000-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 AM AST SAT SEP 5 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 10 0 20
TEMP (24H TREND) 92 (+1) 76 (-1) 93
RH % (24H TREND) 58 (+5) 95 (+6) 57
WIND 20FT/EARLY(MPH) E 12 E 13 E 14 G22
WIND 20FT/LATE(MPH) SE 14 G22 E 13 SE 14 G23
MIXING HGT(FT-AGL/MSL)4560 4850
TRANSPORT WND (MPH) E 17 SE 17
VENT RATE (KT-FT) 68400 72750
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-052000-
SAINT THOMAS AND SAINT JOHN-
330 AM AST SAT SEP 5 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS
CHANCE PRECIP (%) 40 50 40
TEMP (24H TREND) 89 (+1) 79 (-2) 89
RH % (24H TREND) 64 (-3) 92 (+2) 63
WIND 20FT/EARLY(MPH) E 12 E 12 SE 13
WIND 20FT/LATE(MPH) E 12 E 14 SE 12
MIXING HGT(FT-AGL/MSL)2740 2850
TRANSPORT WND (MPH) E 16 SE 17
VENT RATE (KT-FT) 38360 42750
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-052000-
ST CROIX-
330 AM AST SAT SEP 5 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 40 50
TEMP (24H TREND) 90 (0) 79 (-1) 90
RH % (24H TREND) 64 (-2) 93 (+2) 64
WIND 20FT/EARLY(MPH) E 12 E 12 SE 12
WIND 20FT/LATE(MPH) E 12 E 13 SE 12
MIXING HGT(FT-AGL/MSL)4490 4530
TRANSPORT WND (MPH) E 16 SE 16
VENT RATE (KT-FT) 62860 63420
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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